ML20062C540

From kanterella
Jump to navigation Jump to search
Forwards LER 78-020/01T-0
ML20062C540
Person / Time
Site: Peach Bottom Constellation icon.png
Issue date: 11/01/1978
From: Cooney M
PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To: Grier B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20062C545 List:
References
NUDOCS 7811090146
Download: ML20062C540 (2)


Text

a \ [6 2.7 7

}

PHILADELPHIA ELECTRIC COMPANY 2301 MARKET STREET.

P.C[. BOX 8699 C-

>,s.; -

FHILADELPHI A. PA.191C1

~!

tatsah4t40oo November 1, 1973 Mr. Boyce H. Grier, Director Office of Inspection and Enforcement Region I United States Nuclear Regulatory Commission 631 Park Avenue '

King of Prussia, Pennsylvania 19406 _,f

Dear Mr. Grier:

A

SUBJECT:

Licensee Event Report Harrative Description

Reference:

Docket Numbe 50-277' Report No: LER 78-29/lT- ,

Report Date: November 1, 1973  :

Occurrence Date: October 19, 1978 Facility: Peach Bottoo Atomic Power Station 1 Unit 2 i i

. R.D. 1, Delta, PA 17314 Technical Specification

Reference:

Section 3.7.A.5 of the Technical Specifications establishes '

the maximum limit for containment oxygen concentration.

Description of the Event:

Witn Unit 3 at 10'4% power, the control room operator noted that the drywell oxygen concentration had increaseo to b.lt acove the Tech. Spec. limit of 4.0%.

Conseq uences - of Event:

Due to the fact that the concentration was only U.lt s'ove o the limit and the concentration was reduced to 4.C% within 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />, the consequences are minimal. ,

S '

7 'll0 T D $ W(: I L

e !" * .s....